The 'Break the Ice' superstar is reportedly obsessed with cryogenic freezing technology, and wants her body preserved in liquid nitrogen after her death.

A friend of Britney's said: "Britney gets these obsessions and this is the latest. It started when someone told her Walt Disney had been preserved by cryogenics to be revived in the future.

"It got her researching and she became convinced it was worth a shot."

The 28-year-old singer reportedly spent all of her Mother's Day trip to Disneyland researching cryogenics on the internet as a nanny took her boys around the theme park, and she is even hoping to invest a chunk of her fortune - currently controlled by her father Jamie Spears - on the life-reviving technology.

The source added to The Sun newspaper: "Jamie is quite happy to let Britney have her little obsession. And if she wants to invest her money in cryogenics that's fine, we're only talking around $350,000 maximum. "However, much more than that and he may change his mind."

Britney also considered having a glamorous cremation before deciding she wanted to be brought back to life in years to come if the technology can resurrect her.

Her friend said: "She looked into having her ashes turned into diamonds after she is gone but settled on the chance of getting to live in the future."